Stroke-varying mechanism.



PATENTED APR. 2, 1907.

C. H. BALDWIN. STROKE VARYING MECHANISM.

APPLIUATION FILED NOV.12, 1906.

ATTORNEY UNITED STATES .ATENT OFFICE.

CLOISE H. BALDWIN, OF ERIE, KANSAS, ASSIGNOR OF ONE-THIRD TO W. R. CLINE AND ONE-THIRD TO THOMAS K. REECE, OF ERIE, KANSAS.

STROKE-VAFfiJNG MECHANISM.

Specification of Letters Patent.

Patented April 2, 1907.

To all whom/1 2$ ntay concern:

Be it known that I, CLOISE H. BALDWIN, a citizen of the United States, residing at Erie, in the county of Neosho and State of Kansas, have invented certain new and useful Improvements in Stroke-Varying Mechanism, of which the following is a specification, reference being had to the accompanying drawings. I

My invention relates to improvements in means for transmittingpower and the object of my invention is to provide a device of this character which may be readily and uickly adjusted to vary the length of the stro e, the connecting-rod being of a constant length.

In the drawings illustrating the principle of my invention and the best mode now known to me of applying that principle,Fig

ure 1 is a side view of so much of a power transmitting mechanism as is necessary to illustrate my invention. Fig. 2 is another view of the same taken in the direction of the arrowA in Fig. 1, and Fig. 3 is a detail of the driving-chain.

. The sprocket-wheel a is mounted fast upon the shaft b and is connected by the sprocketchain c with the sprocket-wheel d, mounted free to rotate on the stub-shaft e, one end of which is threaded to receive the nut f and which is mounted in the slot 9 formed in the supporting-beam h. One end of the connecting-rod i is attached to the cross-head j,

which is slidably mounted in the guides Z" and.

which carries the rod m. The other end of the connecting-rod is connected to the sprocket-chain c, this end being bent and passed through holes in the washer n and the links 0.

The cross-head the slotted support h, and the shafts b and e are in substantial alinement with one another.

The links of the chain are connected or keyed together by a key-pin p, which is doubled upon itself and formed with an eye q near its middle. The ends 7* of the key-pin are upset, as is shown in Fig. 3.-

If it be found desirable to vary the stroke or length of travel of the cross-head the nut f is loosened and the stub-shaft e is moved to the desired position in the slot 9, the sprocketchain 0 having been disengaged from the sprocket-Wheel d in case the stroke 1s lengthened. In the latter case new links are added to the chain until it is of the length needed for the new position of the stub-shaft. The ends of the chain are connected after passing it around the sprockets a and c. In case the stroke is to be shortened links are removed from the chain until it is of the desired length.

I claim r A stroke-varying mechanism comprising the combination of a shaft a sprocket-wheel fast u on said shaft; a stub-shaft; a support there orformedwith a slot inwhich said stub-- CLOISE H.'BAL DWIN.'

Witnesses: I

- GRANT CUMMINGS,

J. Q. STRATTON. 

